ETI PERI TOU hAGIAS8HTW TO ONOMA SOU
Still, with respect to the "hallowed be thy name"
KAI TWN hEKsHS PROSTAKTIKWi XARAKTHRI EIRHMENWN
and the sequence of imperative statements
LEKTEON,
it must be said
hOTI SUNEXWS PROSTAKTIKOIS ANTI EUKTIKWN
that successive imperatives instead of optatives
EXRHSANTO KAI hOI hERMHNEUSANTES
are to be explained as (speaking with God???)

LSJ seems to say that I can take the middle form of CHRAW to mean:

[3.] Mid. to consult a god or oracle, to inquire of a god or oracle, consult
him or it, c. dat., psuchi chrsomenos teiresiao Od.; chr. thei, Lat. uti
oraculo, Hdt., etc. --From the sense of using an oracle comes the general
sense of chraomai to use [1v. chraomai]1:--absol. to consult the oracle,
Od., Hdt.; hoi chrmenoi the consulters, Eur.:--perf. part., kechrmenos one
who has received an oracular response, Arist.